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Old Sep 24, 2013, 10:34 PM
Registered User
United States, MI, Chesaning
Joined Jul 2012
54 Posts
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Electric set up

Hello fellow flyers!

I am VERY green when it comes to setting up a electric airplane. Right now im getting into 3D electrics. I am getting a Extreme Flight Extra 300 60" EXP and have a 3dhs Extra 330sc still in the box.
I would like some help getting a general understanding on how to set up an airplane so that the battery, motor, and ESC all work together and i dont burn something up haha.
Any help is appreciated
Have a good one

-littlenitro
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Old Sep 24, 2013, 10:57 PM
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manuel v's Avatar
Mexico, BC, Mexicali
Joined Aug 2004
5,417 Posts
This model to 6 lb.

Extreme Power Pack.

Power Combo
Extra 300-EXP ARF
Torque 4016/500 brushless motor
Airboss 80 Elite ESC
$429.95 + Shipping

For 200% thrust, with APCe 15x8

Is necesary one outruner with
Weight. 350-420 grams
Kv around 480.
6slipo 4000ma.
ESC 70-85A.

Manuel V.
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Old Sep 25, 2013, 03:54 AM
Registered User
Staffs, UK
Joined Nov 2003
10,788 Posts
Quote:
Originally Posted by Littlenitro_216 View Post
I would like some help getting a general understanding on how to set up an airplane so that the battery, motor, and ESC all work together and i dont burn something up haha.
1. Work out what current the motor/prop are going to take. The various calc programs, Motocalc, Drivecalc etc are useful for this but you have to have first decided what battery voltage you're going to use. E.g. 3S, 4S etc.
2. Choose the ESC so it can take MORE current than this.
3. Choose a battery that could provide even more. The current a battery should be able to provide is mAh/1000 x C-rating.

E.g. motor wants 42A, choose 50A or better 60A ESC, battery something like 3000mAh @ 30C (3000/1000 x 30 = 90A). Nothing burns up .

There's a lot more to choosing a power system that works well for a specific plane but those basics at least get you one where the parts work together without damage.

Steve
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Old Sep 25, 2013, 04:44 AM
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scirocco's Avatar
Australia, ACT, Kambah
Joined Feb 2001
3,290 Posts
Quote:
Originally Posted by Littlenitro_216 View Post
Hello fellow flyers!

I am VERY green when it comes to setting up a electric airplane. Right now im getting into 3D electrics. I am getting a Extreme Flight Extra 300 60" EXP and have a 3dhs Extra 330sc still in the box.
I would like some help getting a general understanding on how to set up an airplane so that the battery, motor, and ESC all work together and i dont burn something up haha.
Any help is appreciated
Have a good one

-littlenitro
You will not go wrong using the setups that EF and 3dhs respectively recommend. If you're not willing to spend that money, then find a motor with the same Kv (within 20 or so), and close to the same weight, ESC of the same current capacity (ensure it has a switching BEC built in or use an external switching BEC) and the same capacity and cell count packs - and use no more than the recommended prop size
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Old Sep 25, 2013, 10:03 AM
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Fourdan's Avatar
Antony (France)
Joined Sep 2003
3,020 Posts
Quote:
Originally Posted by Littlenitro_216 View Post
Hello fellow flyers!

I am VERY green when it comes to setting up a electric airplane. Right now im getting into 3D electrics. I am getting a Extreme Flight Extra 300 60" EXP and have a 3dhs Extra 330sc still in the box.
I would like some help getting a general understanding on how to set up an airplane so that the battery, motor, and ESC all work together and i dont burn something up haha.
Any help is appreciated
Have a good one

-littlenitro
Hi Little nitro
Try Scorpion Calc wizard
http://www.rcgroups.com/forums/showp...&postcount=368
Select the right flight mission/style
Louis
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Old Sep 26, 2013, 07:01 AM
Registered User
United States, MI, Chesaning
Joined Jul 2012
54 Posts
Quote:
Originally Posted by slipstick View Post
1. Work out what current the motor/prop are going to take. The various calc programs, Motocalc, Drivecalc etc are useful for this but you have to have first decided what battery voltage you're going to use. E.g. 3S, 4S etc.
2. Choose the ESC so it can take MORE current than this.
3. Choose a battery that could provide even more. The current a battery should be able to provide is mAh/1000 x C-rating.

E.g. motor wants 42A, choose 50A or better 60A ESC, battery something like 3000mAh @ 30C (3000/1000 x 30 = 90A). Nothing burns up .

There's a lot more to choosing a power system that works well for a specific plane but those basics at least get you one where the parts work together without damage.

Steve
Hey thanks slipstick! I really appreciate the help
When you gave the example, 3000mAh @ 30C (3000/1000 x 30 = 90A) do i always divide the mAh by 1,000?
So that being done, you would need a ESC that can take up to 90A? with the 30c 3000mAh battery.
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Last edited by Littlenitro_216; Sep 26, 2013 at 08:57 AM.
Old Sep 26, 2013, 07:02 AM
Registered User
United States, MI, Chesaning
Joined Jul 2012
54 Posts
Quote:
Originally Posted by Fourdan View Post
Hi Little nitro
Try Scorpion Calc wizard
http://www.rcgroups.com/forums/showp...&postcount=368
Select the right flight mission/style
Louis
Thanks Fourdan, ill check out the calc
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